Hi Sven,
I have used the "Panausorus" head but I changed for a
nodal ninja 3 which is much more sturdy and precise and not so expensive (especially with the $/€ ratio) considering the superb build quality.
Example (Slight crop from three vertical shots merged with "panorama factory").
Be careful, if you use a "big camera" like canon 5D, Panausorus is definitely
not a good choice and you should look at nodal ninja 5.
Regards. J.